Reverse shoulder arthroplasty is a procedure used to treat shoulder arthritis and rotator cuff tears. It works by reversing the natural ball-and-socket anatomy of the shoulder joint. Early results showed improved shoulder function and pain relief. However, complications can include scapular notching, instability, infection, and loosening. Modifications to implant design, including increased prosthetic overhang, have helped reduce scapular notching. While reverse shoulder arthroplasty can improve shoulder function in patients with rotator cuff dysfunction, long-term outcomes remain variable and reoperations are sometimes required to address complications.

1. EVERSE SHOULDER ARTHROPLASTY
Gonzalo Samitier MD, PhD
HFHS Sports Medicine Fellow

2. NO INTEREST CONFLICT

3. 1917 - 2011
“… outcomes of shoulder
arthroplasty were poorer when
the rotator cuff was not
functional"
Charles S. Neer

4. Rocking horse phenomenon
"Rocking horse phenomenon"

7. ROTATOR CUFF ARTHROPATHY

9. "If at first the idea is not absurd, then there is no hope
for it."

11. "Get a good idea and stay with it. Dog it, and
work at it until it’s done right."
- Walt Disney

12. Grammont Type Reverse
(France 1987)
Grammont P, Trouilloud P, Laffay JP, et al. Etude et realisation d’unenouvelle
prothe`sed’e`paule.Rheumatologie. 1987;39:407–418. [French]

13. EARLY RESULTS
Sirveaux JBJS Br 2004 – Delta III
• 80 shoulders
• 44 mo f/u average
• 92.5% satisfied
• Elevation improved 73 to 138
• 64% scapular notching
Frankle et al JBJS Aug 2005 – Encore RSP
• 60 shoulders
• 33 mo f/u
• 95% satis
• Elevation improved 55 to 105
• No scapular notching

14. Increasing Indications, complications
and … Imitations

15. INDICATIONS RSA
• Cuff Tear Arthropathy (CTA)
• Irreparable Massive cuff tear in elderly
• Osteoarthritis with cuff tear in elderly
• Proximal humerus malunion/nonunion of Tuberosities
• Acute proximal humerus fractures in elderly??
• Revision TSA – loose glenoid or failed cuff
• Old infection (infection cleared)
• Inflammatory arthritis with severe cuff deficiency
• Tumor resection
• Others
“… symptomatic shoulder with rotator cuff
non functional"

17. DESIGNS

18. PROBLEMS & COMPLICATIONS RSA
• Scapular notching 35.4%
• Instability 4.7%
• Infection 3.8%
• Glenoid loosening 3.5%
• Hematoma
• Acromial insufficiency fracture 1.5%
• Humeral loosening 1.3%
• Humerus fx 1.4%
• Neuropraxia 1.2%
• Glenoid disassembly Humeral disassembly
• Polyethylene dislocation
Matthias A. Zumstein, MDa,b, Miguel Pinedo, MDa,d, Jason Old, MD, FRCSCa,c, Pascal
Boileau, MDa,* Problems, complications, reoperations, and revisions in reverse total
shoulder arthroplasty: A systematic review. J Shoulder Elbow Surg (2011) 20, 146-157

19. • Problems 44%
• Complications 24%
• Reoperations 3.5%
• Revisions after 10%.
Matthias A. Zumstein, MDa,b, Miguel Pinedo, MDa,d, Jason Old, MD, FRCSCa,c, Pascal
Boileau, MDa,* Problems, complications, reoperations, and revisions in reverse total
shoulder arthroplasty: A systematic review. J Shoulder Elbow Surg (2011) 20, 146-157
PROBLEMS & COMPLICATIONS RSA

26. Lieven F de Wilde, Didier Poncet, Bart Middernacht, and Anders Ekelund
Prosthetic overhang is the most effective way to prevent scapular conflict in a
reverse total shoulder prosthesis. Acta Orthopaedica 2010; 81 (6): 719–726

28. RESULTS
Smith CD, Guyver P, Bunker TD. Indications for reverse shoulder replacement: a
systematic review. J Bone Joint Surg Br. 2012 May;94(5):577-83

30. Result Reverse TSA 1 Year F/U

31. Result after irreparable RCT

32. SURGICAL TECHNIQUE
https://www.vumedi.com/video/reverse-total-shoulder-arthroplasty-technical-
note-and-results-at-uf/

33. MADRID

34. MADRID

35. MADRID